Problem: Mac systems running MacOS High Sierra may be impacted by an issue that prevents Active Directory password changes from working properly. This effects Centrify and Apple bound Macs alike. When a mobile Active Directory user changes their password using the System Preferences > User > Change password on Mac, it fails to notify Active Directory, as well as syncing the new password to FileVault. However, the keychain password will be updated.
Cause: This is due to an Apple Bug
Workaround: There are two workarounds for this issue.
In Active Directory force the user to change password at next login.
Use terminal to change the password using terminal command 'adpasswd' to reset the current logged in user.
Solution: Apple will resolve this in the 10.13.1 release.